I cant get to the second half of the run, ive tried it so much that the first half is easier than the tutorial.. This is my problem http://gyazo.com/bd6b2f87cc6a68c455aa1417b7529df0
Every single time i get there im never in range to hit the stupid thing.
I'd greatly appreciate if anybody could explain to my why i can't, ive seen replays of just about 50 different people, and it seems like the game kind of did it for them and sped them up but as for myself i cant even make it there.

Yep, something like here. What happens is you jump but still grapple onto the inclination (make sure you're pressing up+left!), transferring the momentum of the jump onto the grapple, which ultimately lets you jump higher and reach the block of dust.

When you jump off the corner you'll still hit the slide. You'll just slide along it faster so when you get into the air you'll be moving faster. You should try practicing in different areas that have corners that are similar in order to get the timing down.

An easy way to practice stuff that's not near a checkpoint is to go into the Dustforce folder (C:\Steam\steamapps\common\dustforce\ for example) and copy the map from \content\levels2\ to \user\level_src\ and then open it up in the editor and move the starting point around.